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"While the buildings were able to withstand the initial impact of the aircraft, the resulting fires that spread through the towers weakened support columns and floors that had fireproofing dislodged by the impacts," says Shyam Sunder, who led the NIST investigation.
"Even with the aeroplane impact and jet-fuel-ignited multi-floor fires - which are not normal building fires - the buildings would likely not have collapsed had it not been for the fireproofing that had been dislodged," he says.
Originally posted by CaptainObvious
BRAVO! you saw a fireball...yet ...did you bother to look INSIDE???
ALL the jet fuel was gone? Funny NIST and FEMA had estimated about 30-40%...but hey.. i will listen to YOU over 186 Engineers!!
Why dont you look into the fireballs in th e elevator shafts
that were in BOTH towers.
Originally posted by SpaceBits
And as for the explosion blowing off the Asbestus...
"Because both towers totaly collapsed on September 11, 2001, and most of the sprayed fire-resistive material (SFRM) was either dislodged or abraded (or scraped) off in the collapse, no examples remain of the "as installed" condition of the SFRM."
Originally posted by CaptainObvious
BRAVO! you saw a fireball...yet ...did you bother to look INSIDE???
ALL the jet fuel was gone? Funny NIST and FEMA had estimated about 30-40%...but hey.. i will listen to YOU over 186 Engineers!!
Why dont you look into the fireballs in th e elevator shafts
that were in BOTH towers.
Originally posted by CaptainObvious
BRAVO! you saw a fireball...yet ...did you bother to look INSIDE???
ALL the jet fuel was gone? Funny NIST and FEMA had estimated about 30-40%...but hey.. i will listen to YOU over 186 Engineers!!
Why dont you look into the fireballs in th e elevator shafts
that were in BOTH towers.
A survivor from a floor in the 80s: “The entire corridor became an inferno outside our front door. Smoke began to enter our office. There was also debris falling. ... The fire on the corridor was at least 10 ft high, and it ran the … good length of the corridor. Then I saw a fireball come down the elevator shaft and blew the elevator doors. The fireball came right at me; it was a really bright color. Interview 1000055 (NIST 2004)
Then the first plane hit. “The elevator doors closed, and I heard ‘Bang! Bang!’” says Carmen. “We were trying to get the door open.” With the door just half-open, Carmen squeezed out into a smoke-filled corridor. As she looked back to tell her passengers that it was safe to exit, a plume of fire seared her face, hands and legs.
Jimmy Loughran : "The whole building began to sway about six of seven feet each way. It was like being rocked around in a boat," he said.
"Everybody froze, we didn't know what had happened. Then there was a massive explosion, it must have been the fuel from the plane exploding after the initial impact.
“I saw a couple of elevators in free fall; you could hear them whizzing down and as they crashed, there was this huge explosion, like a fireball exploding out of the bank of elevators,” Kravette said. “People were engulfed in flames.”
Edward McCabe: I was in the refrigeration plant in tower 1 sub basement 4. I was passing through when I felt a slight shifting of the building. I froze right where I stood and listened....nothing.. about 30 seconds past (sic) and to my left about 30 feet from me was a stairway leading up to a door. this door explodes off its hinges and white smoke came into the plant. I later on found out the reason there was an explosion was the jet fuel filled the elevator shaft and seconds later a spark triggered an explosion.
As I turned around to go back toward the core of the building in the lobby, the second plane hit, and that shook the building.
We heard the explosion and within a matter of seconds after that impact, I heard – and as well as everybody else heard – this noise, this increasing sound of wind. And it was getting louder and louder. It was like a bomb, not quite the sound of a bomb coming down from a bomber. It was a sound of wind increasing, a whistling sound, increasing in sound.....
What we heard was 6 and 7 car free-falling from the 107th floor and they impacted the basement at B-2 Level. And that’s the explosion that filled the lobby within a matter of two or three seconds, engulfed the lobby in dust, smoke.
And apparently from what I talked to with other mechanics, they saw the doors, the hatch doors blow off in the lobby level of 6 and 7 car.... And the noise, the wind noise we heard was, you have to picture that there are two cars or cabs in a hoist length. And a hoist weighs only so big, and it’s encapsulated by walls, so as these two cars came, fell together, the air pressure underneath would cause that sound that we heard."
It progressed down the building, breaking the windows as it went; the entire building was groaning, an unnatural, unearthly sound, much like a can squeezing, or cracking uncooked spaghetti. By the time it reached the lobby, the marble veneer was cracking and falling off the walls; the chandeliers shattered on the floors along with the plaster ceiling, and the force imploded in at about 50 mph, pulling metal, balled safety glass, and other material with it. The pipes were bursting over my head and dense materials were flying around me as if they were being pureed in a blender. In the next instant came a horrible noise and a flash of extreme heat and light blown directly over my head. I concluded later in the day that this was from the huge airplane fireball sent down the 78-110 elevator shaft that exploded out into the lobby, and blew around the walls and curled into the center vestibule where I was taking cover.
...The two officers and I were the only ones who made it out alive.
...As the debris and dust settled, water started to rain down, and black smoke began to roll through with the strong smell of jet fuel in what was left of a once beautiful lobby
As we got to the third floor of the B stairway, we forced open an elevator door which was burnt on all three sides. The only thing that was remaining was the hoistway door. And inside the elevator were about I didn’t recognize them initially, but a guy from 1 Truck said oh my God, those are people. They were pretty incinerated. And I remember the overpowering smell of kerosene. That’s when Lieutenant Foti said oh, that’s the jet fuel. I remember it smelled like if you’re camping and you drop a kerosene lamp.
At around 8.45am, Ronnie walked into the lobby of the Marriott, which was connected to the lobby of the north tower by a revolving door.......The zipper of what had once been a sweater had melted into her chest, as if it were the zipper to her own body. Her hair had been singed to a crisp steel wool. With her, in the gust of the door, came a pungent odour, the smell of kerosene or paraffin, Ronnie thought.
(Vasana) Mutuanot was in the lobby of Tower One when she heard the first explosion. Thinking it was a bomb like the terrorist attack in 1993, she turned to run, looking over her shoulder as flames leaped from a freight elevator shaft cooking her back and legs and right cheek. "It was a fireball with sand and heat, like a hurricane of fire," she said.
“I saw a couple of elevators in free fall; you could hear them whizzing down and as they crashed, there was this huge explosion, like a fireball exploding out of the bank of elevators,” Kravette said. “People were engulfed in flames.”
The doors parted, but the elevator had become stuck just as the bottom of the cab was reaching the lobby of the south tower. Only the feet of the trapped passengers were visible as the burning jet fuel that had cascaded down the shaft ahead of them threatened to broil them alive.
Firefighter Timothy Brown: We finally set up -- prior to this I believe it was the west side of the core of the building there were elevators. Someone had come to me and said that there were people trapped in one of those elevators. So I ran around the corner, and the hoist way doors were open, but the elevator car was only showing about two feet at the top of the door. You could see all the legs of the people that were in the elevator. I would guess there were about eight people in the elevator. The elevator pit was on fire with the jet fuel.
As I got off the back -- the back step, there were a few individuals that were civilians that were outside that were burnt. There was a -- he wasn't a regular security guard. He had a weapon on him. I don't know if he was FBI or Secret Service and he was trying to put the pants out on one individual that was conscious. His pants were still smoldering. I took the can, fire extinguisher off the truck and then sprayed down the pants on the person that was still conscious.
At that time, I had asked him where did this individual come from. He told me when the plane had hit, a fire ball had shot down the elevator shaft and had blown people out of the lobby.
We went into the lobby. The lobby actually looked like the plane hit the lobby. From what I understand, I was told afterwards, that a fireball shot down the elevator shaft and blew out all the windows in the lobby and blew out the elevator doors.
Originally posted by CaptainObvious
64 people on 43 levels below the impact zones reported smelling or contacting jet fuel/kerosene on these floors
North Tower: 87, 85, 83, 81, 78, 63, 62, 60, 57, 53, 52, 47, 46, 40, 39, 36, 35, 34, 33, 29, 27, 25, 13, 12, 9, 7, 6, 5, 4, 3, Plaza level, Concourse, B1, B6, and one unknown floor.
South Tower: 75, 74, 68, 61, 40, 25, Plaza Level, Concourse.
Originally posted by CaptainObvious
Wow...you can all watch a fireball and GUESS how much of the est. 28K gallons burned up?